Protected electric-service cut-out.



R. C. COLE.

PROTECTED ELECTRIC SERVICE CUT-OUT.

APPLICATION FILED ocnzs. 1914.

3 1558 896 Patented NOV. 2, 1915.

2 SHEETS-SHEET lwas R. C. COLE. PROTECTED ELECTRIC StRVICE CUT-OUT.

APPLICATION FILED OCT- 26, i914.

b Ja l UNITED STATEl PATENT @FETCE.

ROBERT C. COLE, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE JOHNS-PRATT COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

rno rnotrnn ELECTRIC-SERVICE concur.

Specification of Letters fatent.

Patented Nov. 2, 1915.

Application filed October 26, 1914. Serial No. 868,571.

especially designed for use in main lines where they enter buildings. These cutouts are commonly inclosed in boxes and provided with fuses so arranged that the fuses cannot be reached without opening the boxes, and the boxes cannot 'be opened without breaking the circuits.

The object of the invention is to provide a simple, cheap and compact cut-out of this nature which is etllcient, safe and easily manipulated.

Figure 1 of the accompanying drawings shows a vertical section of the structure, with the box, cover and block in the cover cut on the plane indicated by the dotted line l1 on Fig. 2. Fig. 2 shows a. plan oi the device with the cover removed. Fig. 3 shows a. vertical section of the boX and cover on the plane indicated by the dotted line 3-3 on Fig. 2. Fig. 4c is view looking into the cover of the box.

The boX 1 is desirably made oi cast iron or steel. with one or more openings, depending on the number of wires in the installa tion with which the cut-out is to be used. in opposite sides. In these openings are insulating bushings @n one side oi? the box are cars 3 to which are hinged the cars that project from the cover 5. 0n the opposite side of the box are lugs 6 between which is pivoted bolt i that carries a nut 8 and is adapted to be turned up into engagement with wings 9 on the cover for the purpose or" holding the cover fastened down to the box.

- To the bottom, inside of the box. a block 1, & ,safl'i i mio, desirably Oi porcelain, 1 ,lnQfi. 'illlb bl ck has one more con p ates 1 at-e sides.

in its upper t i To the outer end oi each of 1 wire lug i2 is t'" wardly from hi1;-

plates are fingers 13 shaped to form switch clips.

To the inside of the cover an insulating block 1%. preferably made of porcelain, with downwardly opening pockets 15, is fastened. On two opposite sides of the block in the cover and downwardly projecting blades 16 which, when the cover is closed, are adapted to extend between and engage with the spring fingers which form the switch clips on the base. In the pockets are metallic screw threaded shells 17, each of which is connected by a p ate 18 with a blade on one side of the block in the cover. In the center of each of the shells and insulated therefrom is a contact 19 having a. stem 20 which extends upwardly through the block and engages a conducting plate 21 which is connected with the switch blade on the other side of the block. These shells are arrangedto receive the common form of fuse plug 22.

Owing to the construction the service wires may be brought into the bottom or top of these boxesdepending upon the arrangement of the circuit wires in the locality in which the boxes are to be used. They are compact and safe. The fuses cannot be reached without opening the cover and the cover cannot be opened without breaking the circuit. The circuit is thoroughly protected by the fuses, and the switch blades and clips, being permanently located and independent of the fuses. will at all times properly engage to render efiicient service without danger of heating or becoming dislocated so as to fail to connect.

The invention claimed. is;

'13. cut-out consisting of a metallic box, a cover hinged at one edge and adapted to be secured to the other edge oi the box, an insulating block with recesses in its upper fac fastened to the inside of the bottom of 1 box. an insulating block attached to the cover and swinging therewith, conducting lates secured to the top ot the block in the i303; "posits edges, means for con- 3 plans, switch clips pro- 1 from said plates. switch edges of the block on the cover in position to engage With said clips, a plurality of'inand fuse plugs screwed into said shells and sulating sockets extending downwardly extending downwardly therefrom into the 10 from the llock on tlie coyer,k a threadded recesses in the block in the base. shell secure in each 0 the soc ets, con uctors connecting said shells-.to' the switch ROBERT blades on one side, central terminals in said sockets, conductors connecting said terminals to the switch blades on the other side,

Witnesses:

HAZEL Gr. BRAINARD, DUNCAN C. HOOPER. 

